This tiny, red-haired insect infesting pine bark trees, Native to East
Asia, have been infesting American Hemlock forests since
Detailed Description
Habitat and Distribution
Impacts
Risks/Impacts: Imported from East Asia, the Wooly Adelgid has
been stripping and destroying vast amounts of Hemlock forests.
This is limiting the amounts of timber produced each year, for
Hemlock forests are responsible for 4 million cubic feet each year. (1)
History
Control Measures
To keep the distribution under control, insecticides are the recommended cure.
However, the treatment proces varies throught out the year. Horticultural oils with a one
percent solution are recommended dating from May to September. (3)
Hemlock Wooly Adelgid (Adelges Tsugae)
General Information
This tiny, red-haired insect infesting pine bark trees, Native to EastAsia, have been infesting American Hemlock forests since
Detailed Description
Habitat and Distribution
Impacts
Risks/Impacts: Imported from East Asia, the Wooly Adelgid hasbeen stripping and destroying vast amounts of Hemlock forests.
This is limiting the amounts of timber produced each year, for
Hemlock forests are responsible for 4 million cubic feet each year. (1)
History
Control Measures
To keep the distribution under control, insecticides are the recommended cure.However, the treatment proces varies throught out the year. Horticultural oils with a one
percent solution are recommended dating from May to September. (3)
Works Cited
1) Woodsen, Mary M.. "Forest INVADERS. (insects that invade hemlock trees).". American Forests Summer 2001: 33.
2) US Government. "Northeast Area". USDA Forest Service. November 13, 2008 <http://www.na.fs.fed.us/fhp/hwa/>.
Day, Eric. "Hemlock Wooly Adelgid". Insect Identification Laboratory . Nov. 21, 2008 <http://www.ext.vt.edu/departments/entomology/factsheets/hewoadel.html>.